Tiziana Life SciencesTLSA +2.23%30 ROE % is -553.35% as of Dec. 2025. GuruFocus rates TLSA with a GF Score™ of 30/100. The stock has 2 warning signs investors should review. Among 1,256 Biotechnology companies, Tiziana Life Sciences ranks worse than 94.59% on this metric.
The historical rank and industry rank for Tiziana Life Sciences's ROE % or its related term are showing as below:
TLSA'
s ROE % Range Over the Past 10 Years
Min: -946.89 Med: -129.01 Max: -45.18
Current: -419.27
During the past 13 years, Tiziana Life Sciences's highest ROE % was -45.18%. The lowest was -946.89%. And the median was -129.01%.
TLSA's ROE % is ranked worse than 94.59% of 1256
companies
in the Biotechnology industry
Industry Median: -38.26
vs TLSA: -419.27
Tiziana Life Sciences (NAS:TLSA) ROE % Explanation
ROE % measures the rate of return on the ownership interest (shareholder's equity) of the common stock owners. It measures a firm's efficiency at generating profits from every unit of shareholders' equity (also known as net assets or assets minus liabilities). ROE % shows how well a company uses investment funds to generate earnings growth. ROE %s between 15% and 20% are considered desirable.
The factors that affect a company's ROE % can be illustrated with the three-step DuPont Analysis:
Note:
The net income data used here is two times the semi-annual (Dec. 2025) net income data. The Revenue data used here is two times the semi-annual (Dec. 2025) revenue data. The same rule applies to Pre-Tax Income and Operating Income.
* In the five-step DuPont Analysis, Operating Income is only available for non-financial companies. Thus, for Insurance companies, we use EBIT as a substitution of Operating Income. For Banks, both Operating Income and EBIT is unavailable. Thus we combined Interest Burden and Operating Margin % into Pretax Margin %, and the DuPont Analysis is divided into four components instead.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Be Aware
Net Income is used.
Because a company can increase its ROE % by having more financial leverage, it is important to watch the equity multiplier when investing in high ROE % companies. Like ROA %, ROE % is calculated with only 12 months data. Fluctuations in company's earnings or business cycles can affect the ratio drastically. It is important to look at the ratio from a long term perspective.
Asset light businesses require very few assets to generate very high earnings. Their ROE %s can be extremely high.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
For the Biotechnology subindustry, Tiziana Life Sciences's ROE %, along with its competitors' market caps and ROE % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Tiziana Life Sciences ROE % vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, Tiziana Life Sciences's ROE % distribution charts can be found below:
* The bar in red indicates where Tiziana Life Sciences's ROE % falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
In the calculation of annual ROE %, the net income of the last fiscal year and the average total shareholder equity over the fiscal year are used. In calculating the quarterly data,
the net income data used here is two times the semi-annual (Dec. 2025) net income data.
ROE % is displayed in the 30-year financial page.
Tiziana Life Sciences (TLSA) has a ROE % of -553.35% as of Dec. 2025. Return on equity is the ratio of current-period net income to average two-period total equity. View historical data on Tiziana Life Sciences and its competitors. According to the industry distribution chart, Tiziana Life Sciences ranks #1188 out of 1256 companies in the Biotechnology industry, placing it in the top 94.6%.
Is Tiziana Life Sciences' ROE % too high?
Tiziana Life Sciences' current ROE % is -553.35%. Based on the distribution chart, Tiziana Life Sciences ranks #1188 out of 1256 companies in the Biotechnology industry, which is in the bottom quartile relative to peers. Overall, Tiziana Life Sciences has a GF Score™ of 30/100, reflecting its overall financial health beyond just this single metric.
How does Tiziana Life Sciences' ROE % compare to DTIL and MIST?
According to the Biotechnology industry distribution chart, Tiziana Life Sciences ranks #1188 out of 1256 companies for ROE %. This places Tiziana Life Sciences in the lower half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good ROE % for a Biotechnology company?
A good ROE % depends on the Biotechnology industry context. However, ROE % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high ROE % mean?
A high ROE % can signal that a stock is expensive relative to its fundamentals. Return on equity is the ratio of current-period net income to average two-period total equity. View historical data on Tiziana Life Sciences and its competitors. Tiziana Life Sciences's current ROE % is -553.35%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tiziana Life Sciences stock overvalued right now?
Tiziana Life Sciences (TLSA) has a current ROE % of -553.35%. The current ROE % is -553.35%. Tiziana Life Sciences' overall GF Score™ is 30/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is ROE % calculated?
ROE % is calculated from a company's financial statements. For Tiziana Life Sciences (TLSA), the current ROE % is -553.35% as of Dec. 2025. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Tiziana Life Sciences Ltd is a clinical-stage biotechnology company that specializes in developing transformative therapies for neurodegenerative and neuroinflammatory diseases. The company's clinical pipeline includes drug assets for Non-Active Secondary Progressive Multiple Sclerosis, Multiple System Atrophy, Alzheimer's, and Amyotrophic Lateral Sclerosis. The company's mission is to design and deliver next-generation immunotherapies for neurodegenerative and neuroinflammatory diseases. The company's main immunotherapeutic candidate, Foralumab (TZLS-401), is being developed for Non-Active Secondary Progressive Multiple Sclerosis, Alzheimer's, and other CNS indications.
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